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Long-Term Debt - Additional Information (Detail)				12 Months Ended
Long-Term Debt - Additional Information (Detail)	Jun. 12, 2020 USD ($)	Mar. 24, 2020 USD ($)	May 24, 2018 USD ($) fiscalQuarter	Dec. 31, 2020 USD ($)	May 24, 2020 USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]
Maturity of long-term debt, 2021				$ 0.0
Maturity of long-term debt, 2022				0.0
Maturity of long-term debt, 2023				0.0
Maturity of long-term debt, 2024				0.0
Maturity of long-term debt, 2025				75,000,000.0
Maturities of long-term debt, thereafter				800,000,000.0
Bonds issued and outstanding				73,700,000
Senior Notes \| Secured Debt
Long-term Debt, Fiscal Year Maturity [Abstract]
Long-term debt, senior notes			$ 400,000,000
Credit Facility
Long-term Debt, Fiscal Year Maturity [Abstract]
Aggregate amount to be borrowed to meet letter of credit requirements				$ 606,700,000
Interest rate on borrowings				1.41%
Credit Facility \| Prime Rate or Canadian Prime Rate \| Minimum
Long-term Debt, Fiscal Year Maturity [Abstract]
Debt instrument, basis spread on variable rate			0.00%
Credit Facility \| Prime Rate or Canadian Prime Rate \| Maximum
Long-term Debt, Fiscal Year Maturity [Abstract]
Debt instrument, basis spread on variable rate			0.75%
Credit Facility \| Base Rate
Long-term Debt, Fiscal Year Maturity [Abstract]
Debt instrument, basis spread on variable rate				0.25%
Credit Facility \| Eurocurrency Rate
Long-term Debt, Fiscal Year Maturity [Abstract]
Debt instrument, basis spread on variable rate				1.25%
Credit Facility \| Eurocurrency Rate \| Minimum
Long-term Debt, Fiscal Year Maturity [Abstract]
Debt instrument, basis spread on variable rate			1.00%
Credit Facility \| Eurocurrency Rate \| Maximum
Long-term Debt, Fiscal Year Maturity [Abstract]
Debt instrument, basis spread on variable rate				1.75%
Credit Facility \| Secured Debt
Long-term Debt, Fiscal Year Maturity [Abstract]
Increase in maximum borrowing capacity under certain conditions			$ 250,000,000
Line of credit facility covenant, percentage of EBITDA			65.00%
Maximum leverage ratio required for future credit increase			2.50
Number of fiscal quarters \| fiscalQuarter			4
Maximum leverage ratio			4.00
Maximum leverage ration after material acquisition			4.50
Minimum interest coverage ratio			3.00
Credit Facility \| New Credit Facility \| Secured Debt
Long-term Debt, Fiscal Year Maturity [Abstract]
Credit agreement, maximum borrowing capacity					$ 50,000,000
Credit Facility \| Canadian Dollar Term Loan Facility \| Secured Debt
Long-term Debt, Fiscal Year Maturity [Abstract]
Credit agreement, maximum borrowing capacity					250,000,000
Credit Facility \| Performance Letter of Credit \| Minimum
Long-term Debt, Fiscal Year Maturity [Abstract]
Letter of credit fee			0.75%
Credit Facility \| Performance Letter of Credit \| Maximum
Long-term Debt, Fiscal Year Maturity [Abstract]
Letter of credit fee			1.05%
Credit Facility \| Senior Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
Commitment fee on unused portions of credit agreement, variable range				0.175%
Credit facility, aggregate borrowings outstanding				$ 75,000,000.0
Credit Facility \| Senior Notes \| Minimum
Long-term Debt, Fiscal Year Maturity [Abstract]
Commitment fee on unused portions of credit agreement, variable range			0.15%
Credit Facility \| Senior Notes \| Maximum
Long-term Debt, Fiscal Year Maturity [Abstract]
Commitment fee on unused portions of credit agreement, variable range			0.225%
Credit Facility \| Senior Notes \| Secured Debt
Long-term Debt, Fiscal Year Maturity [Abstract]
Credit agreement, maximum borrowing capacity					$ 500,000,000
Credit Facility \| Letter of Credit
Long-term Debt, Fiscal Year Maturity [Abstract]
Credit facility, aggregate borrowings outstanding				$ 68,300,000
Credit Facility \| Letter of Credit \| Minimum
Long-term Debt, Fiscal Year Maturity [Abstract]
Letter of credit fee			1.00%
Credit Facility \| Letter of Credit \| Maximum
Long-term Debt, Fiscal Year Maturity [Abstract]
Letter of credit fee			1.75%
Credit Facility \| Letter of Credit \| Base Rate
Long-term Debt, Fiscal Year Maturity [Abstract]
Letter of credit fee				0.825%
Credit Facility \| Letter of Credit \| Eurocurrency Rate
Long-term Debt, Fiscal Year Maturity [Abstract]
Letter of credit fee				1.25%
Senior Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
Stated interest rate percentage of senior notes			5.375%
Senior Notes Due 2028 \| Senior Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
Long-term debt, senior notes	$ 400,000,000
Stated interest rate percentage of senior notes	4.125%
Redemption price percentage	100.00%
Amendment No. 1 to Credit Agreement \| Base Rate \| Minimum
Long-term Debt, Fiscal Year Maturity [Abstract]
Debt instrument, basis spread on variable rate		0.00%
Amendment No. 1 to Credit Agreement \| Base Rate \| Maximum
Long-term Debt, Fiscal Year Maturity [Abstract]
Debt instrument, basis spread on variable rate		0.75%
Amendment No. 1 to Credit Agreement \| Eurocurrency Rate \| Minimum
Long-term Debt, Fiscal Year Maturity [Abstract]
Debt instrument, basis spread on variable rate		1.00%
Amendment No. 1 to Credit Agreement \| Eurocurrency Rate \| Maximum
Long-term Debt, Fiscal Year Maturity [Abstract]
Debt instrument, basis spread on variable rate		1.75%
Amendment No. 1 to Credit Agreement \| Secured Debt
Long-term Debt, Fiscal Year Maturity [Abstract]
Increase in maximum borrowing capacity under certain conditions		$ 250,000,000
Amendment No. 1 to Credit Agreement \| Performance Letter of Credit \| Minimum
Long-term Debt, Fiscal Year Maturity [Abstract]
Letter of credit fee		0.75%
Amendment No. 1 to Credit Agreement \| Performance Letter of Credit \| Maximum
Long-term Debt, Fiscal Year Maturity [Abstract]
Letter of credit fee		1.05%
Amendment No. 1 to Credit Agreement \| Senior Notes \| Minimum
Long-term Debt, Fiscal Year Maturity [Abstract]
Commitment fee on unused portions of credit agreement, variable range		0.15%
Amendment No. 1 to Credit Agreement \| Senior Notes \| Maximum
Long-term Debt, Fiscal Year Maturity [Abstract]
Commitment fee on unused portions of credit agreement, variable range		0.225%
Amendment No. 1 to Credit Agreement \| Senior Notes \| Secured Debt
Long-term Debt, Fiscal Year Maturity [Abstract]
Credit agreement, maximum borrowing capacity		$ 750,000,000
Amendment No. 1 to Credit Agreement \| Financial Letter of Credit \| Minimum
Long-term Debt, Fiscal Year Maturity [Abstract]
Letter of credit fee		1.00%
Amendment No. 1 to Credit Agreement \| Financial Letter of Credit \| Maximum
Long-term Debt, Fiscal Year Maturity [Abstract]
Letter of credit fee		1.75%
Debt Instrument, Redemption, Period One \| Senior Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
Percentage of principal redeemable				40.00%
Redemption price percentage				105.375%
Debt Instrument, Redemption, Period One \| Senior Notes Due 2028 \| Senior Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
Percentage of principal redeemable	40.00%
Redemption price percentage	104.125%
Debt Instrument, Redemption, Period Two \| Senior Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
Redemption price percentage				100.00%
Debt Instrument, Redemption, Period Two \| Senior Notes Due 2028 \| Senior Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
Redemption price percentage	102.063%
Debt Instrument, Redemption, Period Three \| Senior Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
Redemption price percentage				102.688%
Debt Instrument, Redemption, Period Three \| Senior Notes Due 2028 \| Senior Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
Redemption price percentage	101.031%
Debt Instrument, Redemption, Period Four \| Senior Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
Redemption price percentage				101.344%
Debt Instrument, Redemption, Period Four \| Senior Notes Due 2028 \| Senior Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
Redemption price percentage	100.00%
Debt Instrument, Redemption, Period Five \| Senior Notes
Long-term Debt, Fiscal Year Maturity [Abstract]
Redemption price percentage				100.00%